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Context. We have carried out a semi-automated search for planetary nebulae(PNe) in the INT Photometric H-Alpha Survey (IPHAS) catalogue. We present thePN search and the list of selected candidates. We cross correlate the selectedcandidates with a number of existing infrared galactic surveys in order to gainfurther insight into the nature of the candidates. Spectroscopy of a subset ofobjects is used to estimate the number of PNe present in the entire candidatelist.  Aims. The overall aim of the IPHAS PN project is to carry out a deep censusof PNe in the northern Galactic plane, an area where PN detections are clearlylacking.  Methods. The PN search is carried out on the IPHAS photometric catalogues.The candidate selection is based on the IPHAS and 2MASS/UKIDSS colours of theobjects and the final candidate selection is made visually.  Results. From the original list of ~600 million IPHAS detections we haveselected a total of 1005 objects. Of these, 224 are known objects, leaving uswith 781 PN candidates. Based on the initial follow-up spectroscopy, we expectthe list to include very young and proto-PNe in addition to genuine, normal PNe(~16 %) and emission line objects other than PNe. We present additionalcriteria to select the most probable PN candidates from our candidate list.

Candidate planetary nebulae in the IPHAS photometric catalogue